grade crossing vs crossroad

grade crossing and crossroad both are nouns.

Word	Noun	Adjective	Verb	Adverb
grade crossing	Yes	No	No	No
crossroad	Yes	No	No	No

As nouns, crossroad is a hypernym of grade crossing; that is, crossroad is a word with a broader meaning than grade crossing:

grade crossing: intersection of a railway and a road on the same level; barriers close road when trains pass
crossroad: a junction where one street or road crosses another

Other hypernyms of grade crossing include carrefour, crossing, crossway, intersection.

grade crossing (noun)	crossroad (noun)
intersection of a railway and a road on the same level; barriers close road when trains pass	a junction where one street or road crosses another